Reconsider the paint-drying situation of Example 8.2, inwhich drying time for a test

Chapter 8, Problem 18

(choose chapter or problem)

Reconsider the paint-drying situation of Example 8.2, inwhich drying time for a test specimen is normally distributedwith . The hypotheses versusare to be tested using a random sample ofobservations.a. How many standard deviations (of ) below the nullvalue is ?b. If , what is the conclusion using ?c. What is a for the test procedure that rejects H0 when?d. For the test procedure of part (c), what is b(70)?e. If the test procedure of part (c) is used, what n is necessaryto ensure that ?f. If a level .01 test is used with , what is the probabilityof a type I error when ?

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